I'm having trouble with this, too.  I've got  2 gig external on my quadra610\ that
the installer can't handle. (scsi #5 error)  
the root partition is on the internal drive and was was formatted with the mkfs
 from the macOS side and the /usr was formatted with the "newfs" from the NetBSD
side.

/dev/sd0a                /
/dev/sd0b    swap       
/dev/sd1g               /usr

That's my basic layout above.  I didn't know about the different levels of the ffs
before.  This may explain some of the problems that I've had in the past. with
segmentation faults and the file system never being clean on reboot.
  
I picked up a centris 650 over the weekend and installed everything on one
partion and things seem to work much smoother than the quadra with the "mix
and match" partitions.


So now I want to change both "/" and "/usr" to the same type 1, 2 or 3 or whatever..
but I get the same error as shown below.    

dev/rsd0a: BAD SUPER BLOCK: VALUES IN SUPER BLOCK DISAGREE WITH THOSE IN FIRST
ALTERNATE
  

BTW:  There is a store called weirdstuff.com.  It's literally a computer junkyard.
But one man's trash is another man's treasure and there are some good deals on 
all kinds of computer parts there. I got the Centris there for $75  You can check
their location at:

www.weirdstuff.com.


   Guy


--- Nathan Raymond <nate@portents.com> wrote:
> At 11:01 AM -0500 6/4/00, Frederick Bruckman wrote:
> 
> >On Sun, 4 Jun 2000, Nathan Raymond wrote:
> >
> >>  fsck -T ffs:"-c 2" /
> >>
> >>  which promptly core dumped.  Doing an fsck on the volume now produces
> >>  the following error:
> >>
> >>  /dev/rsd0a: BAD SUPER BLOCK: VALUES IN SUPER BLOCK DISAGREE WITH
> >>  THOSE IN FIRST ALTERNATE
> >
> >Try to use the alternate superblock: "fsck_ffs -b 32".
> 
> I tried that first, and though it asks if I want to update the 
> standard superblock (and I said yes), the problem still persists.
> 
> (I just tried again, and its still not fixed.)
> 
> >  > and fsck can't do a thing about it, apparently.  At least I haven't
> >>  found a way through reading the man pages to get fsck or fsck_ffs to
> >>  fix it.  Do I really need to reformat the partition and start over?
> >>  And is this a bug, or did I do something wrong?
> >
> >Sounds like a bug. I could swear "fsck_ffs -c3 /" worked for me at
> >some time in the past (NetBSD-1.3.2?).
> 
> Hmmm.  I guess this is something most folks don't do?
> 
> --
> Nathan Raymond



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